Finding the Fourth Proportional to 1,154,322.69, 1,592,962.78 and 645,025.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,154,322.69 : 1,592,962.78 = 645,025.07 : x
2. Step 2: Convert to fraction form
   1,154,322.69/1,592,962.78 = 645,025.07/x
3. Step 3: Cross multiply
   1,154,322.69x = 1,592,962.78 × 645,025.07
4. Step 4: Simplify right side
   1,154,322.69x = 1,027,500,928,676.89
5. Step 5: Solve for x
   x = 1,027,500,928,676.89/1,154,322.69
6. Step 6: Final answer
   x = 890,133.18